<template>
  <div>
    <div class="citySearch">
      <input v-model="keyword" type="text" class="search-input" placeholder="输入城市名或拼音">
    </div>
    <div class="search-content" ref="searchContent" v-show="keyword">
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of lists"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >{{item.name}}</li>
        <li
          class="search-item border-bottom"
          v-show="hasNoData">没有搜索到匹配的数据</li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'citySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      lists: [],
      timer: null
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.lists = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.lists = result
      }, 100)
    }
  },
  computed: {
    hasNoData () {
      return !this.lists.length
    }
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('changCity', city)
      this.$router.push('/')
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.searchContent)
  }
}
</script>

<style scoped lang="stylus">
  @import "~styles/varibles.styl"
  .citySearch
    height .72rem
    background-color $bgColor
    padding 0 .1rem
    .search-input
      width 100%
      height .62rem
      line-height .62rem
      border-radius .06rem
      box-sizing border-box
      text-align center
      padding 0 .1rem
      color #666
  .search-content
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    background-color #eee
    z-index 1
    .search-item
      line-height .62rem
      padding-left .2rem
      background-color #fff
      color #666
</style>
